Modeling of hot-pressing processes of metal powder materials together with organic plasticizer is considered. The balance equation of substance in a container during the pressing process has been chosen as a mathematical model.  In this case, pressure applied to the powder in the container during the pressing process is the reason for concentration change. A thermal conductivity equation has been solved together with balance equation of substance.  The joint solution for the balance equation and the thermal conductivity equation with relevant edge conditions has been found. As the equations are non-linear, their joint solution is made by a numerical method. An algorithm which provides getting a solution of as high accuracy as it is desired has been made. A control system of hot-pressing process taking two stages has been developed. At the first stage an insignificant thickening of metal powder, till a compact product is formed, and diffusion of the plasticizer around grains edges take place. At the second stage the product being pressed is thickened till it forms a solid composite. During the pressing process temperature and pressure control is performed with corresponding sensors. Pressing is carried out in automatic mode according to algorithm pre-developed on the basis of equations solution. Pressing of soft magnetic material based on iron has been made. The X-ray spectrum analysis of specimens of obtained soft magnetic composites showed that the electric isolation layer is spread uniformly across the grain surface and magnetic loss is low, when these composites are used in electric devices.

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